more careful validation

8 years ago · b0e00d337e
parent c4e5741ae0
commit b0e00d337e
1 changed files with 1 additions and 1 deletions
--- a/www/common/pinpad.js
+++ b/www/common/pinpad.js
@ -120,7 +120,7 @@ define([
            exp.getFileListSize = function (cb) {
                rpc.send('GET_TOTAL_SIZE', undefined, function (e, response) {
                    if (e) { return void cb(e); }
-                    if (response && response.length) {
+                    if (response && response.length && typeof(response[0]) === 'number') {
                        cb(void 0, response[0]);
                    } else {
                        cb('INVALID_RESPONSE');